#include <iostream>
using namespace std;

class Test {
  private:
    int num;

  public:
    Test(int num = 0) { this->num = num; } //初始化数据成员num为形参num
    int GetNum() const { return num; }
};

int main() {

    Test obj;
    cout << obj.GetNum() << endl;

    return 0;
}
